[wa.hoo] n, pl wahoos [origin unknown] (1770): winged elm
[2]wahoo n, pl wahoos [Dakota wahu, fr. wa- arrow + hu wood] (1857): a shrubby No. American spindle tree (Euonymus atropurpureus) having purple capsules which in dehiscence expose the scarlet-ariled seeds--called also burning bush [3]wahoo n, pl wahoos [origin unknown] (ca. 1900): a large vigorous mackerel (Acanthocybium solandri) that is common in warm seas and esteemed as a food and sport fish [4]wa.hoo interj (ca. 1924) chiefly West--used to express exuberance or enthusiasm or to attract attention